Cutting or extending the pipe
5. Check if you flared the pipe correctly (see examples of incorrectly flared pipes below).
Correct | Inclined | Damaged | Cracked | Uneven |
|
| Surface |
| Thickness |
6.Align the pipes to connect them easily. Tighten the flare nuts first with your hands, and then with a torque wrench, applying the following torque:
Flare nut
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Indoor outlet |
| pipe |
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| Connecting pipe | |||||||||
Outer Diameter | Torque (kgf•cm) |
ø6.35 mm | 140~170 |
ø9.52 mm | 250~280 |
ø12.70 mm | 380~420 |
ø15.88 mm | 440~480 |
ø19.05 mm | 990~1210 |
ø22.23 mm | 990~1210 |
• Excessive torque can be cause of gas leakage. In case brazing the pipe, the nitrogen gas must be blown into the
pipe (50 Pa). The joint must be accessible and serviceable.
7. For further details on how to connect to the outdoor unit and purge the air, refer to page 34~36.
• Tighten the flare nut with torque wrench according to specified method.
If the flare nut is
Installing and connecting the drain hose of the indoor unit
When installing the drain hose for the indoor unit, check if condensation draining is adequate. When passing the drain hose through the
Wall
Indoor unit 
Drain hose
The drain hose must not be bent.
The drain hose must NOT slant upwards.
5cm 
less
Keep a clearance of at least 5cm between the end of the drain hose and the ground.
The end of the drain hose must NOT be placed under water.
Ditch
Do not place the end of the drain hose in a hollow.
32